http://www.bbc.co.uk/news/magazine-12244964
The moment Britain became an island
Ancient Britain was a peninsula until a tsunami flooded its land-links to Europe some 8,000 years ago. Did that wave help shape the national character?
(…)

http://www.youtube.com/watch?v=q7r3zvWJ16k
The Black Sea Flood – Top 10 Natural Disasters
Evidence suggests the world map was redrawn by a mega flood of a biblical proportions about 9 thousand years ago. The area now covered by the Black Sea was once home to one of the largest populations at the time. Presented by oceanographer Dr. Simon Boxall and Hristo Smolenov, PhD in logic and heuristics.